His pneumococcal pneumonia diagnosis followed a work travel period June 29 to July 2, where he visited Wisconsin and Illinois to campaign for Democratic incumbents and candidates, as well as hold policy-related events.

During his visit to Wisconsin, Hoyer conducted a stop with California Democrat Barbara Lee on their Pathways Out of Poverty Listening Tour.

And in Illinois he visited a community health center and held labor union a roundtable with Rep. Jan Schakowsky, a Democrat from that state.